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1. Click the exhibit.

Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions.

Which of the following configurations is required on router A so that router B can exchange traffic with router D?

Option A

Option B

Option C

Option D

2. Based on the default settings for the Alcatel-Lucent 7750 SR, when a policy change is made and committed, what action is required by the user for the change to take effect?

Execute a command to re-evaluate all routes in the Local-RIB against the configured export policies.

Execute a command to re-evaluate all routes in the RIB-In against the configured import policies.

Execute a command to reset the BGP session with the affected peer or peers.

No further action is required.

3. An Alcatel-Lucent 7750 SR receives two updates for the same route with local preferences 200 and 300, respectively.

What local preference is sent to eBGP peers?

100

200

300

None

4. Which of the following regarding route reflectors is TRUE?

Only the route reflector is configured with a cluster id.

There can only be one route reflector in a cluster.

Clients should have iBGP sessions with each other to maintain the mesh.

There can only be one level of route reflectors in the topology.

5. Which of the following statements about the BGP Advertise External feature is FALSE?

It modifies the BGP advertisement logic.

It improves convergence times and allows for better load sharing.

It allows a router to advertise multiple external paths for a single prefix.

It supports both IPv4 and IPv6.

6. Click the exhibit.

Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions.

Given the following iBGP configuration on router A, what is the Next Hop for prefix 2001:DB8:A:401::1/128 on router B?

The IPv6 link-local address of the router D interface towards router

The IPv6 link-local address of the router A interface towards router

The IPv6 global address of router

7. Click the exhibit.

AS 65550 owns the CIDR block 10.64.0.0/12. Router R4 advertises the aggregate 10.64.0.0/12 to AS65540.

Which of the following is TRUE regarding the aggregate route advertisement?

The aggregator attribute will not be present, and the atomic aggregate flag will not be set.

The aggregator attribute will not be present, and the atomic aggregate flag will be set.

The aggregator attribute will be present, and the atomic aggregate flag will not be set.

The aggregator attribute will be present, and the atomic aggregate flag will be set.

8. Which regular expression will match the AS Path of a route originating in remote AS 65100?

".+ 65100"

"65100.+"

".* 65100.*"

"65100"

9. Which of the following is TRUE?

There can only be one community associated with a route.

Community is an optional non-transitive attribute.

Community is an optional transitive attribute.

Community is a well-known discretionary attribute.

10. An Alcatel-Lucent 7750 SR receives a route from an eBGP peer without a MED.

What MED value is sent to iBGP peers?

100

250

The IGP cost

None

Page 2 of 10

11. Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?

"client1" routes will be tagged with communities "North" and "West".

"client1" routes will be tagged with community "West".

"client1" routes will be tagged with community "North".

"client1" routes will be rejected.

12. Which of the following is TRUE if the local state of BGP is OpenConfirm?

The local system has received a Keepalive message and is ready to exchange updates.

The local system is exchanging Update messages with its neighbor.

The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.

The local system has sent an Open message to its neighbor and is waiting to receive one back.

13. How is the aggregator attribute handled with 32-bit AS numbers?

With the same method and attribute as 16-bit AS numbers.

With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

Aggregation is not yet supported with 32-bit AS numbers.

By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTL

14. A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100.

Which route will appear in the RIB-out?

Only the first route will appear in the RIB-Out.

Only the second route will appear in the RIB-Out.

Only the third route will appear in the RIB-Out.

All routes will appear in the RIB-Out.

15. Which of the following routes is NOT considered an internal route?

A route received from a BGP peer within the same A

A route originated by a router in a different cluster of the same A

A route received from a BGP peer from a different member AS of a confederation.

A route received from a BGP peer from the same member AS of a confederation.

16. Click the exhibit.

AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "as-set" enabled.

Which of the following is TRUE regarding the aggregate route received by router R7?

The AS Path is set to 65540, and the Atomic Aggregate flag is set.

The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.

The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.

The AS Path is set to 65550, and the Atomic Aggregate flag is not set.

17. Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes" on router R5?

Option A

Option B

Option C

Option D

18. Click the exhibit.

Routers RR1 are RR2 are redundant route reflectors for clients R3 and R4.

Which of the following is a valid configuration on router RR1?

Option A

Option B

Option C

Option D

19. Which of the following organizations would an ISP based in Europe approach for an IP prefix assignment?

ARIN

ICANN

RIPE NCC

LACNIC

APNIC

20. Click the exhibit.

Routers RR1 and RR2 are route reflectors with the same Cluster-ID.

When the update for prefix 192.168.1.0/27 is received at router RA2, what are the Originator_ID and Cluster_List attributes?

Originator_ID of RR1; and Cluster_List of 10.16.10.1.

Originator_ID of RX; and Cluster_List of 10.16.10.1.

Originator_ID of RR1; and the Cluster_List is not set.

Neither the Originator_ID nor the Cluster_List is set.

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21. Which of the following AS Paths will match the regular expression "65100."?

"65100"

"65100 65200''

"65200 65100"

"65100 65250 65200"

22. An Alcatel-Lucent 7750 SR has the BGP configuration shown below.

Assuming the router has established BGP sessions to routers R1 and R2, which of the following is TRUE?

Both neighbors R1and R2 should be part of AS 65540.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65540.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65560.

Both neighbors R1and R2 should be part of AS 65560.

23. Which of the following is the minimum requirement for an AS to be considered multi-homed?

A single connection to a single service provider.

Two connections to a single service provider.

Two connections to two different service providers.

Multiple connections to different service providers.

24. What will happen if an update is received with an unrecognized optional non-transitive attribute?

The router will accept the update and send a notification.

The router will not accept the update and send a notification.

The router will accept the update and ignore the attribute.

The router will accept the update and propagate the attribute.

25. Which of the following regarding the atomic aggregate attribute is TRUE?

It is an optional transitive attribute.

It is an optional non-transitive attribute.

The atomic aggregate flag is always set if the aggregator attribute is set.

The atomic aggregate flag is always set if the AS Path information is lost due to aggregation.

26. An autonomous system has 7 routers configured with BGP.

How many iBGP sessions are required for a fully meshed configuration?

27. Which of the following is FALSE regarding the 16-bit public autonomous system numbers?

They are allocated to the RIRs by ICANN/IAN

They are used when connecting ASs on the Internet.

They range from 1 to 56319.

They are assigned by the ISPs for enterprise networks.

28. When an Alcatel-Lucent 7750 SR receives a BGP route with an AS Path loop, what action is taken by default?

The route is ignored.

The route is flagged as invalid and placed in the LOC-RI

The route is flagged as invalid and placed in the RIB-In.

The route is flagged as invalid and placed in the RIB-Out.

29. Which of the following statements regarding BGP Add-Paths is FALSE?

Add-Paths allows non-best paths to be advertised to a peer.

Add-Paths capabilities are exchanged between peers after the BGP session is established.

A BGP speaker must advertise the capability to receive multiple paths from its peer.

A BGP speaker must advertise the capability to send multiple paths to its peer.

30. Click the exhibit.

Router R6 is a route reflector with clients R1, R2 and R5. Router R3 advertises the prefix 192.168.1.0/27 to routers R1, R2 and R5.

How many routes for prefix 192.168.1.0/27 will router R6 receive?

None

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31. Click the exhibit.

Over which BGP session will router B learn the 10.1.1.0/24 prefix?

The session between router A and router

The session between router C and router

The session between router D and router

Router B will learn the prefix over all of the sessions, then it will choose the best route.

32. A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS path of 65600 65300 and a local preference of 200.

Which route will appear in the RIB-In?

Only the first route will appear in the RIB-In.

Only the second route will appear in the RIB-In.

Only the third route will appear in the RIB-In.

All routes will appear in the RIB-In.

33. Click the exhibit.

Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP 2?

The update is sent to router R2 in ISP 1.

The update is sent to routers R2 and R3 in ISP 1.

The update is sent to all routers in ISP 1.

The update is sent to routers R2 and R3 in ISP 1, and to router R3 in ISP 2.

34. What is the default Alcatel-Lucent 7750 SR TTL of a BGP advertisement between confederation members?

255

35. Which of the following is considered a best practice for BGP address planning?

Advertising external networks into IG

Using system addresses for setting up iBGP sessions.

Exporting the networks associated with the external links of eBGP peers into BG

Optimizing BGP route table by exporting IGP routes into BG

36. Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP policy?

"client2" routes will be tagged with communities "West" and "North".

"client2" routes will be tagged with communities "West", "North" and "South".

"client2" routes will be tagged with community "West".

"client2" routes will be tagged with community "South".

37. Which of the following statements regarding route reflectors is TRUE?

Route reflectors propagate BGP learned routes to their clients.

Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the A

Route reflectors disable iBGP split horizon for all iBGP peers in the A

Route reflectors do not work in conjunction with confederations.

38. A confederated AS is comprised of three members. One member is comprised of 4 routers, while the other two members are comprised of 3 routers each.

Assuming member ASs are fully meshed and use full mesh iBGP, what is the required number of BGP sessions within the confederation?

39. Which of the following about a single-homed AS is FALSE?

A single-homed AS is also known as a stub A

A single-homed AS is also known as a leaf A

A single-homed AS uses either the ISP AS number or a private AS number.

A single-homed AS can be either transit or non-transit

40. Which of the following commands would correctly configure the confederation AS number as 65200 with a member AS of 65202?

config>router- confederation 65200 members 65202

config>router>bgp= confederation 65200 members 65202

config>router= confederation 65202 members 65200

config>router>bgp= confederation 65202 members 65200

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41. A BGP router has loopback interfaces 192.168.1.1/27 and 192.168.2.1/27 advertised into BGP using the following export policy. The "aggregate 192.168.0.0/16" command is executed.

What is the effect of this configuration?

A single route for 192.168.0.0/16 is advertised.

BGP routes 192.168.1.0/27, 192.168.2.0/27, and 192.168.0.0/16 are advertised.

BGP routes 192.168.1.0/27 and 192.168.2.0/27 are advertised, and 192.168.0.0/16 appears as a "Blackhole" route in the route table only.

The given export policy is invalid.

42. Which of the following regarding BGP authentication on the Alcatel-Lucent 7750 SR is FALSE?

Authentication is performed before establishing the BGP session.

Authentication can only be configuredon the group or neighbor level.

By default, MD5 authentication is disabled.

Peer authentication may be optionally requested in an open message.

43. Which of the following describes BGP route processing on the Alcatel-Lucent 7750 SR?

If no import policy is specified, all valid BGP routes are passed to the BGP route selection process.

If no export policy is specified, all non-BGP routes are populated into RIB-Out.

If no import policy is specified, all BGP routes are populated into the route table.

If no import policy is specified, only valid BGP routes are populated into RIB-Out.

44. Which of the following statements regarding BGP FRR is FALSE?

The router must receive several BGP routes to compute a backup path.

BGP FRR can be triggered by BF

The backup path can use the same next hop as the primary path.

BGP peer-tracking can be used to improve BGP FRR failure detection times.

45. Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that routers R1, R2 and R4 are configured with "add-paths ipv4 send 2 receive", what is the expected output of "show router bgp routes" when executed on router R2?

Option A

Option B

Option C

Option D

46. Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. AS 65541 is advertising prefix 192.168.1.0/27 into BGP.

Which routers have the BGP update for the advertised prefix in their BGP table?

Routers R1, R2, R3, R4 and R5.

Routers R1and R4 only.

Routers R1, R2, R3 and R4 only.

Routers R1, R4 and R5 only.

47. Which of the following statements regarding BGP control plane convergence is FALSE?

Core and edge node failure recovery depends on IGP convergence.

Edge neighbor failure is detected by the eBGP session timeout.

BGP control plane convergence is independent of number of affected prefixes.

Upon BGP control plane convergence, an optimal path is installed in the FI

48. Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing.

Which routers must be configured with the "configure router bgp igp-shortcuts rsvp-te" command?

Routers R6, R1, R4 and R5.

Routers R1and R4.

Routers R1, R2, R3 and R4.

Routers R2 and R3.

49. An Alcatel-Lucent 7750 SR is configured with an export policy to redistribute its directly-connected networks into BGP.

Which of the following databases contains the routes for these networks?

The routes are in the RIB-In.

The routes are in the Loc-RI

The routes are in the RIB-Out.

The routes are not in any of the BGP databases.

50. Which of the following statements regarding BGP shortcuts is FALSE?

MPLS tunnels are used to carry transit traffic across the network.

A full mesh of iBGP peering sessions is not required,

Edge and transit routers need to be configured with BG

The transit routers need to support LDP or RSVP-TE LSPs.

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51. A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a route from BGP for 10.0.0.0/8. Both routes have reachable next hops.

Which of the following is TRUE?

Only the BGP route is in the route table.

Both routes are in the route table.

None of the routes is in the route table.

Only the OSPF route is in the route table.

52. Which of the following regarding the TTL of a BGP message is TRUE?

TTL is a well-known mandatory BGP attribute.

The default TTL value of an eBGP message is 1, and 64 for an iBGP message.

The default TTL value of an iBGP message can be modified using the multihop command.

The default TTL value of an eBGP message can be modified using the "ttl-security" command.

53. The following policies are configured and exported using "export "Policy-1" "Policy-2"".

Assuming both "Client-1" and "Client-2" are properly defined on the router, which routes are advertised?

Client-1 routes only.

Client-2 routes only.

Client-1 and Client-2 routes.

Neither Client-1 nor Client-2 routes.

54. Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200.

On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?

On router R5 only.

On either router R1or R2.

On both routers R1and R2.

On all routers R1, R2 and R5.

55. Two Alcatel-Lucent 7750 SRs are established BGP peers with the following add-paths configuration:

R1: configure router bgp add-paths ipv4 send 4 receive

R2: configure router bgp add-paths ipv4 send 2

If router R1 advertises three routes for a given prefix X, how many routes is router R2 expected to have for prefix X?

None

56. Click the exhibit.

Option A

Option B

Option C

Option D

57. What are the well-known mandatory BGP attributes?

Origin, Next Hop and Local Preference.

Local preference, AS Path and Next Hop.

Aggregator, Next Hop and AS Path.

AS Path, Next Hop and Origin.

58. How are policy direction and data flow related on the Alcatel-Lucent 7750 SR?

Import policies affect ingress data flow.

Export policies affect ingress data flow.

Both import and export policies affect ingress data flow.

Policy direction and data flow are independent.

59. Which of the following statements regarding BGP route selection is TRUE?

Lower local preference is preferred over higher local preference.

Higher MED is preferred over lower ME

Higher origin code is preferred over lower origin code.

Lower BGP router ID is preferred over higher BGP router I

60. Click the exhibit.

Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540".

Which of the following regarding updates originating in AS 65540 is TRUE?

Router R3 rejects all updates originating in AS 65540.

Router R3 accepts updates received from router R1 and rejects updates transited through router R2.

Router R3 accepts updates transited through router R2 and rejects updates received from router R1.

Router R3 accepts updates from both routers R1 and R2.

Page 7 of 10

61. An Alcatel-Lucent 7750 SR receives a route from an eBGP peer with a MED value of 500.

What MED value is sent to iBGP peers?

100

The IGP cost

500

None

62. Click the exhibit.

Router R6 is a route reflector with clients R1, R2, R4 and R5. Router R4 receives three routes from router R6 and is configured with ECMP 3.

Given the following BGP configuration on routerR4, how many primary and backup paths will be present in router R4's BGP routing table?

Three primary paths,

Two primary paths and one backup path.

One primary path and two backup paths.

One primary path and one backup path.

63. Which of the following best describes the purpose of advertise-external?

It enables a BGP speaker to advertise multiple external routes to iBGP peers.

It enables a BGP speaker to advertise its best external route to iBGP peers when the best overall route is internal.

It enables a BGP speaker to advertise its best external route to eBGP peers without an import policy.

It enables a BGP speaker to advertise its best internal route to eBGP peers without an export policy.

64. Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?

ISP 1 has a peering relationship with ISP 2 and ISP 4.

ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.

ISP 1 has a peering relationship with ISP 2 and ISP 3.

ISP 1 has a transit relationship with ISP 2 and ISP 4.

ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.

65. An Alcatel-Lucent 7750 SR receives a route from an iBGP peer with a MED value of 500.

What MED value is sent to eBGP peers?

100

The IGP cost

500

None

66. Click the exhibit.

Routers RR1 and RR2are route reflectors with clients R1x and R2x, respectively. Routers RR1 and RR2 are non-clients of each other, and router R1 is a non-client of both.

Which of the following regarding BGP sessions in AS 65540 is TRUE?

Router R1must have at least one BGP session to each of routers R1x and R2x.

Routers R1, RR1 and RR2 must be fully meshed.

Routers R1x and R2x must have at least one BGP session between them.

Routers R1x as well as routers R2x must be fully meshed.

67. Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5 with local preferences 100, 200 and 500 respectively. Router R3 advertises prefix 192.168.1.0/27 to routers R1, R2 and R5 which are configured with advertise-external. Routers R4 and R6 are both configured with "add-paths ipv4 send 2 receive".

Which routes to 192.168.0.1/27 is router R4 expected to have in its BGP routing table?

The routes from routers R1, R2 and R5.

The routes from routers R1and R2.

The routes from routers R2 and R5.

Two routes are chosen at random and advertised to router R4.

68. Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?

Option A

Option B

Option C

Option D

69. Click the exhibit.

Which of the following is a valid BGP configuration for router R2?

Option A

Option B

Option C

Option D

70. Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Assume routers R4, R5 and R6 are configured with addpaths ipv4 send 2 receive".

Which routes to 192.168.0.1/27 is router R6 expected to have in its BGP routing table?

Two routes from router R4.

Two routes from router R5.

Two routes; one from router R4 and one from router R5.

Four routes; two from router R4 and two from router R5.

Page 8 of 10

71. Which of the following statements regarding Internet Exchange Points is FALSE?

They provide both peering and transit services.

They provide services only to Tier 1 service providers.

They can be either public or private.

They provide services at the local, regional and continental levels.

72. Which of the following is NOT a goal of BGP routing policies?

To protect external networks from instability.

To communicate the architecture of an AS to external ASs.

To protect the local AS and other external ASs from bad NLR

To optimize ingress and egress traffic patterns to best serve the users of the A

73. Click the exhibit.

Assuming the network is IPv6 only, which of the following configurations on the Alcatel-Lucent 7750 SR router A can establish an IPv6 BGP session to router B?

Option A

Option B

Option C

Option D

74. Which of the following best describes the relationship between locally configured policies and the direction of traffic?

Import policies affect the way the local AS receives traffic, while export policies affect the way it sends traffic.

Import policies affect the way the local AS sends traffic, while export policies affect the way it receives traffic.

Both import and export policies affect the way the local AS receives traffic, but not the way it sends traffic.

Both import and export policies affect the way the local AS sends traffic, but not the way it receives traffic.

75. Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between the ISPs?

ISP 1 and ISP 2 have a public transit relationship, while ISP 3 and ISP 4 have a private transit relationship.

ISP 1 and ISP 2 have a private transit relationship, while ISP 3 and ISP 4 have a public transit relationship.

ISP 1 and ISP 2 have a private peering relationship, while ISP 3 and ISP 4 have a public peering relationship.

ISP 1 and ISP 2 have a public peering relationship, while ISP 3 and ISP 4 have a private peering relationship.

76. Click the exhibit.

Routers C and E are route reflectors. When the update for prefix 192.168.2.0/24 is received at router F, what will be the Originator_ID attribute?

The router ID of router

It will not be set.

77. Click the exhibit.

Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into ISP X, which of the following best describes the route advertisement within ISP X?

Router C sends the update to routers E and F only.

Router C sends the update to routers D, E and

Router C sends the update to routers A, B, E and

Router C sends the update to routers A, B, D, E and

78. Which of the following statements regarding BGP Fast Reroute is FALSE?

BGP Fast Reroute is triggered by IGP events.

The backup path is pre-computed and installed in the FI

BGP Fast Reroute is independent of number of affected prefixes.

BGP Fast Reroute uses the optimal path to the destination.

79. What kind of BGP attribute is the Multi_Exit_Disc?

Optional transitive attribute.

Optional non-transitive attribute.

Well-known mandatory attribute.

Well-known discretionary attribute.

80. Click the exhibit.

Given the following configuration for router R1, what is the expected Next Hop for prefix 192.168.1.0/27 as seen on router R2?

10.0.2.1

10.0.2.2

10.16.10.1

10.16.10.3

Page 9 of 10

81. Click the exhibit.

Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP update for the 192.168.0.1/27 prefix contain when it arrives at router B?

AS Path of 65200 65100, Next Hop of router

AS Path of 65100, Next Hop of router

82. Click the exhibit.

Which of the following can be used by router R4 in AS 65542 to reject all routes originating in AS 65540?

An import policy that rejects updates with an AS Path matching the regular expression ".+ 65540 .+".

An import policy that rejects updates with an AS Path matching the regular expression ".+ 65540".

An import policy that rejects updates with an AS Path matching the regular expression "65540 .+".

An import policy that rejects updates with an AS Path matching the regular expression "65540".

83. Click the exhibit.

Which of the following is a valid confederation configuration for Router R2?

Option A

Option B

Option C

Option D

84. Click the exhibit.

Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh.

What path does traffic destined to 192.168.1.0/27 take from router R1?

R1-R3-R8

R1-R2-R4-R8

R1-R3-R4-R8

R1-R2-R4-R3-R8

85. Which of the following regarding BGP confederations is FALSE?

The entire confederation is viewed as a single AS by an eBGP peer.

Within a confederation, each member AS is considered as a stand-alone A

Member ASs within a confederation can use route reflection.

Member ASs must be fully meshed within a confederation.

86. Which of the following is TRUE if a BGP session state is Connect?

BGP is waiting for the TCP connection to be completed.

BGP has established a TCP connection, and an Open message has been sent to that neighbor.

The BGP session has been interrupted, and a TCP connection is being re-established.

BGP has failed to establish a TCP connection to that neighbor, and ConnectRetry has been reset to zero.

87. Which of the following regarding BGP confederations is FALSE?

A confederation is a collection of Autonomous Systems advertised as a single AS number to BGP speakers outside the confederation.

Each member AS must either maintain a full mesh of iBGP sessions, or use route reflection.

Confederations can be used to subdivide ASs that have a large number of BGP speakers into smaller domains.

A full mesh of intra-confederation eBGP sessions is required between the member ASs.

88. What class of attribute is Originator_ID?

Well-known mandatory.

Well-known discretionary.

Optional transitive.

Optional non-transitive.

89. Click the exhibit.

Router R2 is advertising prefix 192.168.1.0/27 with community "no-advertise" towards AS 65002.

Which routers receive an update for that prefix?

Router R3 only.

Routers R3 and R4 only.

Routers R3, R4 and R5 only.

Router R2 does not advertise an update for the prefix.

90. Click the exhibit.

AS 65550 owns CIDR block 10.64.0.0/12. Router R3 is advertising Client1 and Client2 networks into BGP. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "summary-only" enabled.

Which of the following routes are received by router R7?

Client1, Client2 and the aggregate.

Only the aggregate.

Only Client1 and the aggregate.

Only Client2 and the aggregate.

Page 10 of 10

91. An Alcatel-Lucent 7750 SR is configured with a policy to export directly-connected networks to BGP.

Which of the following commands verifies that the export was successful?

show router route-table

show router bgp routes

show router bgp routes <prefix> hunt

show router bgp neighbor <ip-address> received-routes

92. What is the function of the Cluster_List attribute?

It is used for loop detection within the same cluster.

It is used for loop detection between clusters.

It is used for loop detection in a confederation.

It is used to identify the route reflectors within an A

93. Which of the following statements regarding the Internet is FALSE?

It is a global network relying on interconnections provided by Internet service providers.

It is a continuous and interconnected set of public IP networks, advertised and shared across the globe.

It is a settlement-free global network that provides interconnection between Internet service providers.

It is a network that allows any Internet service provider to reach every other Internet service provider in the world.

94. What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?

Policy changes are delayed until the peer router with the affected routes reboots.

Policy changes are delayed until route updates for affected BGP routes are received from peers.

Policy changes are delayed until BGP sessions are cleared or BGP is reset.

Policy changes are delayed until the router reboots.

95. Which of the following statements about an autonomous system is FALSE?

An AS is a set of routers under a single technical administration.

An AS efficiently advertises all IGP known routes to other ASs.

An AS presents a consistent routing policy to other autonomous systems.

An AS has a 2-byte or 4-byte AS number assigned.

96. Which of the following regarding BGP Path Identifier is FALSE?

Path-ID is a four-octet identifier pre-pended to the NLRI field of a BGP update.

Path-ID is an optional transitive attribute used to advertise multiple paths.

Path-ID uniquely identifies each path advertised to a neighbor.

A BGP speaker that re-advertises a route must generate its own Path-I

97. An Alcatel-Lucent 7750 SR is configured with a local preference of 250.

If it receives a BGP update with a local preference of 500, what local preference is sent to its eBGP peers?

100

250

500

None

98. Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP.

Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?

65200 (65206 65202) 65100

(65206 65202)65100

65250 (65206 65202) 65100

65200 65100

99. A router in AS 65100 receives two BGP routes. The first route is for 138.1.1.0/24 with an AS Path of 65200 65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The second route is for 138.1.0.0/16 with an AS Path of 65500 65300, Local Preference of 150, MED of 100, and router ID 10.1.1.1. Assuming all other attributes are equal, which route would be used to forward an IP packet with destination IP address 138.1.1.1?

The first BGP route.

The second BGP route.

Both routes are used.

It is impossible to determine without the value of the origin code for both routes.

100. Click the exhibit.

If router A originates an update for prefix 192.168.0.1/27, what will the update contain when it reaches router B?

AS Path of 65200, local-preference of 100.

AS Path of 65200, local-preference of None.

Null AS Path, local-preference of 100.

Null AS Path, local-preference of None.

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